Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Light Rain

81°F

27°C

Humidity 85%
Wind Speed E 13 mph
Barometer 29.85 in (1010.1 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 20 May 1:54 am ChST
Extended Forecast for

Agat GU

  • Overnight

    Overnight: Isolated showers.  Partly cloudy, with a low around 78. East wind 11 to 13 mph.

    Low: 78 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Isolated showers.  Mostly sunny, with a high near 86. East northeast wind 14 to 17 mph, with gusts as high as 23 mph.

    High: 86 °F

    Isolated
    Showers

  • Wednesday Night

    Wednesday Night: Isolated showers.  Partly cloudy, with a low around 78. East northeast wind 11 to 16 mph, with gusts as high as 22 mph.

    Low: 78 °F

    Isolated
    Showers

  • Thursday

    Thursday: Isolated showers.  Mostly sunny, with a high near 86. East wind 14 to 17 mph, with gusts as high as 22 mph.

    High: 86 °F

    Isolated
    Showers

  • Thursday Night

    Thursday Night: Scattered showers.  Mostly cloudy, with a low around 78. East wind 10 to 14 mph.  Chance of precipitation is 30%.

    Low: 78 °F

    Scattered
    Showers

  • Friday

    Friday: Scattered showers.  Partly sunny, with a high near 86. Chance of precipitation is 30%.

    High: 86 °F

    Scattered
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers.  Mostly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers.  Partly sunny, with a high near 86.

    High: 86 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers.  Mostly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    Showers

Detailed Forecast

Overnight
Isolated showers. Partly cloudy, with a low around 78. East wind 11 to 13 mph.
Wednesday
Isolated showers. Mostly sunny, with a high near 86. East northeast wind 14 to 17 mph, with gusts as high as 23 mph.
Wednesday Night
Isolated showers. Partly cloudy, with a low around 78. East northeast wind 11 to 16 mph, with gusts as high as 22 mph.
Thursday
Isolated showers. Mostly sunny, with a high near 86. East wind 14 to 17 mph, with gusts as high as 22 mph.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 78. East wind 10 to 14 mph. Chance of precipitation is 30%.
Friday
Scattered showers. Partly sunny, with a high near 86. Chance of precipitation is 30%.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 78.
Saturday
A chance of showers. Partly sunny, with a high near 86.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 78.
Sunday
A chance of showers. Partly sunny, with a high near 86.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 82.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 82.
Monday Night
A chance of showers. Mostly cloudy, with a low around 82.
Tuesday
A chance of showers. Mostly cloudy, with a high near 84.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Agat GU
 13.38°N 144.67°E
6:06 pm ChST May 19, 2026
2am ChST May 20, 2026-6pm ChST May 26, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database